<div style="float: right; width: 500px;margin-top: -7px;">
    <form method="get">
        <div class="input-group">
            <input type="text" name="query_param" class="form-control" placeholder="请输入搜索内容..." value="{{query}}">
            <span class="input-group-btn">
                <button class="btn btn-default" type="submit" style="width: 100px;background-color: aliceblue;">
                    <span class="glyphicon glyphicon-search"></span>
                </button>
            </span>
        </div>
    </form>
</div>